package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.SetmealDto;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.SetmealDishService;
import com.itheima.reggie.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 套餐及其相关业务管理
 */
@Slf4j
@RestController
@RequestMapping("/setmeal")
public class SetmealController {

    @Autowired
    private SetmealService setmealService;

    @Autowired
    private SetmealDishService setmealDishService;

    @Autowired
    private CategoryService categoryService;


    /**
     * 新增套餐
     *
     * @param setmealDto
     * @return
     */
    @PostMapping
    @CacheEvict(value = "setmealCache",allEntries = true) //清除setmealCache名称下,所有的缓存数据
    public R<String> save(@RequestBody SetmealDto setmealDto) {
        log.info("套餐信息：{}", setmealDto);

        setmealService.saveWithDish(setmealDto);

        return R.success("保存套餐成功");

    }

    /**
     * 套餐分页查询
     * 扩展：根据自定义sql语句实现分页查询功能
     *
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(Integer page, Integer pageSize, String name) {
      /*  //分页构造器
        Page<Setmeal> pageInfo = new Page<>(page, pageSize);
        Page<SetmealDto> setmealDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Setmeal> setmealLQW = new LambdaQueryWrapper<>();
        //根据name模糊查询
        setmealLQW.like(name != null, Setmeal::getName, name);
        //根据更新时间降序排列
        setmealLQW.orderByDesc(Setmeal::getUpdateTime);

        //执行查询
        setmealService.page(pageInfo, setmealLQW);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo, setmealDtoPage, "records");
        List<Setmeal> pageInfoRecords = pageInfo.getRecords();

        List<SetmealDto> setmealDtos = pageInfoRecords.stream().map((item) -> {
            SetmealDto setmealDto = new SetmealDto();
            //对象拷贝
            BeanUtils.copyProperties(item, setmealDto);

            //分类id
            Long categoryId = setmealDto.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null) {
                //分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;

        }).collect(Collectors.toList());

        setmealDtoPage.setRecords(setmealDtos);*/

        //分页构造器
        Page<SetmealDto> setmealDtoPage = setmealService.pageBySql(page, pageSize, name);

        return R.success(setmealDtoPage);

    }

    /**
     * 删除套餐
     *
     * @param ids
     * @return
     */
    @DeleteMapping
    @CacheEvict(value = "setmealCache",allEntries = true) //清除setmealCache名称下,所有的缓存数据
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("ids:{}", ids);
        setmealService.removeWithDish(ids);
        return R.success("套餐数据删除成功");
    }

    /**
     * 根据条件查询套餐数据
     *
     * @param setmeal
     * @return
     */
    @GetMapping("/list")
    @Cacheable(value = "setmealCache",key = "#setmeal.categoryId + '_' + #setmeal.status",unless ="#result.data==null")
    public R<List<Setmeal>> list(Setmeal setmeal) {
        LambdaQueryWrapper<Setmeal> lqw = new LambdaQueryWrapper<>();
        lqw.eq(setmeal.getCategoryId() != null, Setmeal::getCategoryId, setmeal.getCategoryId());
        lqw.eq(setmeal.getStatus() != null, Setmeal::getStatus, setmeal.getStatus());

        lqw.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(lqw);

        return R.success(list);
    }

    /**
     * 批量停售与起售
     *
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public R<String> status(@PathVariable Integer status, @RequestParam List<Long> ids) {
        log.info("将id为{}的状态修改为{}", ids.toString(), status);
        LambdaQueryWrapper<Setmeal> setmealLQW = new LambdaQueryWrapper<>();
        //update dish set status = status where id in (1,2,3...)
        setmealLQW.in(Setmeal::getId, ids);

        List<Setmeal> list = setmealService.list(setmealLQW);
        list = list.stream().map((item) -> {
            item.setStatus(status);
            return item;
        }).collect(Collectors.toList());

        setmealService.updateBatchById(list);

        return R.success("修改套餐状态成功");
    }

}
